package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.User;
import com.itheima.reggie.service.UserService;
import com.itheima.reggie.utils.SMSUtils;
import com.itheima.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 发送手机验证码
     * @param user
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user,HttpSession session){
        // 获取手机号
        String phone = user.getPhone();

        if(!StringUtils.isEmpty(phone)){
            // 生成四位随机验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("code = {}",code);

            // 调用阿里云短信服务，发送短信
            // SMSUtils.sendMessage("瑞吉外卖","",phone,code);

            // 将生成验证码保存到session中
//            session.setAttribute(phone,code);

            // 将生成的验证码缓存到redis中，并且缓存五分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);

            return R.success("手机验证码发送成功");
        }
        return R.error("短信发送失败");
    }

    /**
     * 移动端用户登录功能
     * @param map
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session){
       log.info(map.toString());

//        获取手机号
        String phone = map.get("phone").toString();
//        获取验证码
        String code = map.get("code").toString();

//        从session中获取保存的验证码
//        Object codeInSession = session.getAttribute(phone);


        //        从redis中获取缓存的验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);

//        进行比对，成功就登录
        if (codeInSession != null && codeInSession.equals(code)){
            //        进行比对，成功就登录
            //        判断新用户，
            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone,phone);

            User user = userService.getOne(queryWrapper);
            if (user == null){
//                如果是新用户，自动完成注册
                user = new User();
                user.setPhone(phone);
                user.setStatus(1);
                userService.save(user);
            }
            session.setAttribute("user",user.getId());

            // 如果用户登陆成功，删除redis缓存的验证码
            redisTemplate.delete(phone);

            return R.success(user);
        }
        return R.error("登录失败");
    }

}
